Malicious PDF — malware analysis report

Static analysis result for SHA-256 73a233b8bc4ba8e2…

MALICIOUS

PDF

71.2 KB Created: 2021-03-01 05:06:43 +02:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2021-04-10
MD5: ab1062a5ec4b3829d5d1405213ed6d87 SHA-1: f3a9dd3a2c2f9cfed6040e8bc13076898edd46fb SHA-256: 73a233b8bc4ba8e2dbf86fcab821a61bd781656cc5e0aff8306cf0cbc7fe5fad
186 Risk Score

Machine Learning

  • Nyx PDF Classifier malicious score 0.9998

Heuristics 6

  • ClamAV: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Pdf.Phishing.Trojan-d2568dad23a94d95-d2568dad23a94d95-10044375-0
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Small PDF is a non-clustered link farm on disposable hosting medium PDF_SEO_DISPOSABLE_LINK_FARM
    Small PDF contains many clickable external PDF links spread thin across many distinct hosts (no single dominant host), corroborated by a utm_term SEO-redirector link and/or links parked on free/disposable content hosts. This is the 'free document/template' SEO phishing PDF family, which ranks for search queries and routes users into payload/redirect chains, rather than a normal document citation pattern. The PDF itself carries no exploit — the risk is the linked destinations.
  • External URI info PDF_URI
    PDF contains an external URL action
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://gimoguvi.ru/award?keyword=husqvarna+460+rancher+operator+manual PDF link annotation
    • https://bogigevaruzo.weebly.com/uploads/1/3/4/4/134435623/5335362.pdfIn PDF document text
    • https://static.s123-cdn-static.com/uploads/4461791/normal_5fdebd55d845f.pdfIn PDF document text
    • http://mirumumavetifun.mypressonline.com/how_to_factory_reset_samsung_a6_tablet_without_password.pdfIn PDF document text
    • https://cdn.sqhk.co/mevazasid/igcn0hw/bowling_speed_meter_app_free_download.pdfIn PDF document text
    • https://tineminelebon.weebly.com/uploads/1/3/1/6/131606156/pofigusoreregetefa.pdfIn PDF document text
    • https://cdn.sqhk.co/vekasurox/RExQ7U7/cruise_lines_international_association_stock.pdfIn PDF document text
    • https://cdn.sqhk.co/vidikusupegu/hhbgihe/btd6_unblocked_hacked.pdfIn PDF document text
    • https://tulalesin.weebly.com/uploads/1/3/4/8/134876190/6173543.pdfIn PDF document text
    • http://podjem2.club/36248505272kq2ck.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4464301/normal_602439561827c.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4379841/normal_60297e14ca1ca.pdfIn PDF document text
    • https://cdn.sqhk.co/libavesonon/b0XDYo2/matugarar.pdfIn PDF document text
    • https://cdn-cms.f-static.net/uploads/4471091/normal_6037ab2689c8c.pdfIn PDF document text
    • https://cdn.sqhk.co/letareximo/gfieDgh/tudotepufatomojunigif.pdfIn PDF document text
    • http://sfr-webmail.com/38981701260zc9zb.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off0000cc4d.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xCC4D 5536 bytes
SHA-256: 9b01923a9ef161f8ecd4fb9371daa62ddf397bcb779af4cfca87521ccacb86b0
font_01_sfnt_off0000def6.bin pdf-font-stream PDF embedded font (sfnt) at offset 0xDEF6 10240 bytes
SHA-256: 2d181ae33869d66d210f2cbde43e67af86360804a54d09ec844598efa607bc65
font_02_sfnt_off000101db.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x101DB 4324 bytes
SHA-256: 4fcfa7c68d76e23b667942a3ac892d2d5d88346478daafc61479ad4df4af3dd3